The only wing that does not produce wing tip vortexes are Hump Back Wale flippers the best wing design in the world with millions of years of research and development behind it.
The wing/flipper has leading edge vortex generators sticking out all along the leading edge which keep the water flow attached at high angles of attack and soft stalls. This design beats the best human straight leading edge design by a reduction in drag of 8% and can be applied to all aerodynamic surface of an aircraft. Designers do not seem have woken up to this performance increase as yet. The Hump Back can pull 30ft diameter turns and can weigh upwards of 30 tons. food for thought. See company called Wale Power that designs wind turbine blades based on this concept.